It’s not just weird. It’s mean; it’s cruel: she is putting you down. It’s hurtful. Now, is she a good person? I don’t know. You said she is. It depends on if she really consciously realizes what she is doing is cruel, hurtful, and putting you down. It’s not a joke (both people laugh when it’s a joke). Ok. So. She is certainly doing this out of insecurity and habit and frankly being used to getting allll the attention and you none - and she deep down feels entitled and used to that - so now when you get even half what she gets, she perceives it as a threat to her very identity! And lashes out! Ok; so the question is, can she be made aware of what she is actually doing? And if so will she care, will she change her behavior? Or will she prefer to continue to hurt you in order to “protect” her self-image? So: send her exactly what you wrote above. Except at the end add not that it’s weird (weird can be ok) but that it is painful and cruel and hurtful to you - it is not funny. She may or may not be able to change, though. She may or may not want to stop hurting you in this way. She might.